A Comparative Evaluation of the Radiopacity of Contemporary Restorative CAD/CAM Blocks Using Digital Radiography Based on the Impact of Material Composition

IF 3 Q3 MATERIALS SCIENCE, BIOMATERIALS
N. Elhelbawy, Rehab F Ghouraba, Fatma A Hasaneen
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引用次数: 3

Abstract

Purpose The main purpose of this study was to assess the radiopacity of contemporary restorative computer-aided design (CAD)/computer-aided manufacturing (CAM) materials and the impact of material composition as measured by energy-dispersive X-ray spectrophotometry (EDX) on radiopacity. Materials and Methods Ten specimens of six CAD/CAM materials with 1 mm thickness were produced and then digitally radiographed with an aluminum (Al) step-wedge (SW) and 1 mm thick tooth slice. The specimen mean gray values (MGVs) were recorded in pixels and compared to an Al-SW, dentin, and enamel of equal thickness. For the elementary analysis of the composition of the materials, EDX was performed. Results The recorded MGVs ranged between 21.20 ± 4.94 and 238.5 ± 13.61 pixels. Materials were sorted according to the MGVs descendingly, Prettau, Vita Suprinity, Vita Enamic, Shofu, Pekkton, and BioHPP. Prettau and Vita Suprinity had significantly higher MGV than dentin and 1 mm thick Al. In comparison, Vita Enamic had a slightly higher value than dentin and 1 mm thick Al. Although Pekkton and BioHPP had MGV significantly lower than dentin and 1 mm thick Al, Shofu had a significantly lower value than dentin and nonsignificantly lower than 1 mm thick Al (p < 0.05). According to EDX analysis, the examined materials contained several components in varying quantities of radiopacity. Conclusions The radiopacity of only three studied materials exceeded the International Organization for Standardization's minimum standards (ISO).
基于材料组成影响的当代CAD/CAM修复体数字x线摄影放射不透明度的比较评价
本研究的主要目的是评估当代恢复性计算机辅助设计(CAD)/计算机辅助制造(CAM)材料的放射不透明度,以及能量色散x射线分光光度法(EDX)测量的材料成分对放射不透明度的影响。材料与方法制作了6种CAD/CAM材料的10个样品,厚度为1mm,然后用铝(Al)阶梯楔(SW)和1mm厚的齿片进行数字x线摄影。以像素为单位记录样品的平均灰度值(MGVs),并与Al-SW、牙本质和等厚度的牙釉质进行比较。对材料的组成进行了初步分析。结果MGVs范围为21.20±4.94 ~ 238.5±13.61。材料按照mgv下降、Prettau、Vita Suprinity、Vita Enamic、Shofu、Pekkton和BioHPP进行分类。Prettau和Vita Suprinity的MGV显著高于牙本质和1 mm厚Al, Vita Enamic的MGV略高于牙本质和1 mm厚Al, Pekkton和BioHPP的MGV显著低于牙本质和1 mm厚Al, Shofu的MGV显著低于牙本质,不显著低于1 mm厚Al (p < 0.05)。根据EDX分析,被检测的材料含有几种不同数量的放射性成分。结论仅有3种材料的放射不透明度超过国际标准化组织(ISO)的最低标准。
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来源期刊
International Journal of Biomaterials
International Journal of Biomaterials MATERIALS SCIENCE, BIOMATERIALS-
CiteScore
4.30
自引率
3.20%
发文量
50
审稿时长
21 weeks
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